SWAP Protocol Decoder Encoder

SWAP Protocol Decoder Encoder

The SSD WSN Application Protocol (SWAP) Protocol

The SWAP protocol provides an easy and lightweight alternative to service oriented application level protocols like the Constrained Application Protocol (CoAP).

Implementations

Message Types

Request Message

0:   CMD_TYPE = 70
1:   REQUEST_ID
2:   REQUEST_TYPE
3:   REQUEST_OPTIONS_LENGTH
4-n: REQUEST_OPTIONS

Response Message

0:   CMD_TYPE = 71
1:   REQUEST_ID
2:   RESPONSE_CODE
3:   RESPONSE_PAYLOAD_LENGTH
4-n: RESPONSE_PAYLOAD

Push Message

0:   CMD_TYPE = 72
1:   SUBSCRIPTION_ID
2:   PAYLOAD_LENGTH
3-n: PAYLOAD

Possible Values for Requests, Responses and Push Messages

Request -> Response

The following table shows the possible values for the various fields of request and response messages:

REQUEST_TYPE	REQUEST_OPTIONS	RESPONSE_PAYLOAD
0x00 GET_SENSORS		newline character-separated string of sensor names and associated key-value pairs, e.g., "temp=1\nhumid=2\nacc=3"
0x01 GET_SENSORNODE_META_DATA		key-value pairs, newline character-separated, e.g., "type=isense\nrevision=jennic85391"